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    1   /*
    2    * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved.
    3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
    4    *
    5    * This code is free software; you can redistribute it and/or modify it
    6    * under the terms of the GNU General Public License version 2 only, as
    7    * published by the Free Software Foundation.  Oracle designates this
    8    * particular file as subject to the "Classpath" exception as provided
    9    * by Oracle in the LICENSE file that accompanied this code.
   10    *
   11    * This code is distributed in the hope that it will be useful, but WITHOUT
   12    * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   13    * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
   14    * version 2 for more details (a copy is included in the LICENSE file that
   15    * accompanied this code).
   16    *
   17    * You should have received a copy of the GNU General Public License version
   18    * 2 along with this work; if not, write to the Free Software Foundation,
   19    * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   20    *
   21    * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
   22    * or visit www.oracle.com if you need additional information or have any
   23    * questions.
   24    */
   25   
   26   package javax.crypto.spec;
   27   
   28   import java.math.BigInteger;
   29   
   30   /**
   31    * This class specifies a Diffie-Hellman private key with its associated
   32    * parameters.
   33    *
   34    * <p>Note that this class does not perform any validation on specified
   35    * parameters. Thus, the specified values are returned directly even
   36    * if they are null.
   37    *
   38    * @author Jan Luehe
   39    *
   40    * @see DHPublicKeySpec
   41    * @since 1.4
   42    */
   43   public class DHPrivateKeySpec implements java.security.spec.KeySpec {
   44   
   45       // The private value
   46       private BigInteger x;
   47   
   48       // The prime modulus
   49       private BigInteger p;
   50   
   51       // The base generator
   52       private BigInteger g;
   53   
   54       /**
   55        * Constructor that takes a private value <code>x</code>, a prime
   56        * modulus <code>p</code>, and a base generator <code>g</code>.
   57        * @param x private value x
   58        * @param p prime modulus p
   59        * @param g base generator g
   60        */
   61       public DHPrivateKeySpec(BigInteger x, BigInteger p, BigInteger g) {
   62           this.x = x;
   63           this.p = p;
   64           this.g = g;
   65       }
   66   
   67       /**
   68        * Returns the private value <code>x</code>.
   69        *
   70        * @return the private value <code>x</code>
   71        */
   72       public BigInteger getX() {
   73           return this.x;
   74       }
   75   
   76       /**
   77        * Returns the prime modulus <code>p</code>.
   78        *
   79        * @return the prime modulus <code>p</code>
   80        */
   81       public BigInteger getP() {
   82           return this.p;
   83       }
   84   
   85       /**
   86        * Returns the base generator <code>g</code>.
   87        *
   88        * @return the base generator <code>g</code>
   89        */
   90       public BigInteger getG() {
   91           return this.g;
   92       }
   93   }

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